Stata’s main data model treats observations in rows and variables in columns quite differently, but rowwise problems also arise that require working against the grain. This column shows how to exploit existing functions and egen functions when they exist and apply to such problems. It offers...

Functions are the unsung heroes of Stata. This column is a tour of functions that might easily be missed or underestimated, with a potpourri of tips, tricks, and examples for a wide range of basic problems.

This is a tutorial on the cond() function, giving explanations and examples and assessing its advantages and limitations. Copyright 2005 by StataCorp LP.